6978178045439 has 8 divisors (see below), whose sum is σ = 6979300901520. Its totient is φ = 6977055306816.

The previous prime is 6978178045417. The next prime is 6978178045441. The reversal of 6978178045439 is 9345408718796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6978178045439 - 2²⁴ = 6978161268223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978178047439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281263667 + ... + 281288475.

It is an arithmetic number, because the mean of its divisors is an integer number (872412612690).

Almost surely, 2^{6978178045439} is an apocalyptic number.

6978178045439 is a deficient number, since it is larger than the sum of its proper divisors (1122856081).

6978178045439 is a wasteful number, since it uses less digits than its factorization.

6978178045439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58729.

The product of its (nonzero) digits is 365783040, while the sum is 71.

The spelling of 6978178045439 in words is "six trillion, nine hundred seventy-eight billion, one hundred seventy-eight million, forty-five thousand, four hundred thirty-nine".